v1.0.2 — practice-environment positioning + eval stability/validity split

[1.0.2] - 2026-06-14

Positioning and eval-honesty pass after a second round of cross-model critique.
Documentation only; no behavior change to the four modes.

• Positioning: a practice environment, not a transfer claim. The README no
  longer sells itself as a fix for carry-over. It is a place to practice the
  move; whether a named move transfers stays the field's open question, stated
  once rather than as a repeated hedge. The "rigor does not transfer on its own"
  motivation is kept (a true phenomenon, not a promise). Removed the
  "trained into its blind spot" harm framing: under a practice-environment
  framing a wrong key is a move to push back on, and the user judges their own
  level.
• Eval metric honesty: stability vs validity. Cross-model agreement is
  documented as a stability / reproducibility measure only (models share
  training data, so they share blind spots), never as correctness. Added
  protocol 1b — a human validity anchor: a person competent in the twelve
  structures cold-solves a frozen sample, human-agreement is the primary
  validity number, cross-model agreement demoted to a secondary stability
  statistic. No run yet, so no validity claim. New
  docs/evals/human-validity-anchor-TEMPLATE.md.
• SKILL.md description em-dash (root + claude-ai overlay): the one
  user-facing string the prior voice pass missed, changed to a colon. Trigger
  keywords untouched; routing unchanged.